Homework Clinic
Science Clinic => Chemistry => Topic started by: Zoey63294 on Jul 8, 2021
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Question 1
If 8.52 g each of zinc, potassium dichromate, and sulfuric acid are reacted by the reaction:
4 Zn + K2Cr2O7 + 7 H2SO4→ 4 ZnSO4 + 2 CrSO4 +K2SO4 + 7 H2O
how many grams of potassium dichromate will be left unreacted?
◦ 1.05 g
◦ 2.84 g
◦ 7.30 g
◦ 4.87 g
◦ 3.65 g
Question 2
If 8.52 g each of zinc, potassium dichromate, and sulfuric acid are reacted by the reaction:
4 Zn + K2Cr2O7 + 7 H2SO4→ 4 ZnSO4 + 2 CrSO4 +K2SO4 + 7 H2O
How many grams of zinc will be left unreacted?
◦ 0.94 g
◦ 3.65 g
◦ 5.27 g
◦ 1.89 g
◦ 3.25 g
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Answer 1
4.87 g
Answer 2
5.27 g
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Thank you!